SUN SPARKS BRIGHT AURORAS: The sun is sliding into a deep Solar Minimum
that continues to defy some expectations. For much of the past week,
the sun was absolutely blank--no sunspots--and solar activity was
deemed "very low." Nevertheless, space weather was stormy. From Oct.
11th through 15th, not a single day went by without a geomagnetic
storm. Bright auroras were sighted not only around the poles, but also
in a number of US states. The reason for these counterintuitive space
storms is explained on today's edition of Spaceweather.com--along with
expectations for more in the days ahead.
Above: On Oct. 12, 2017, the sky above Tromsø, Norway, exploded in a
spray of geomagnetic light. Colin Palmer photographed these bright
green auroras from the island of Kvaloya. More images may be found in
the Realtime Aurora Photo Gallery.